S134-E-008666 (22 May 2011) --- NASA astronaut Andrew Feustel, STS-134 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the eight-hour, seven-minute spacewalk, Feustel and astronaut Michael Fincke (out of frame), mission specialist, completed all planned tasks, including refilling one of the station's cooling loops with ammonia and lubricating one of the station's massive solar alpha rotary joints. Photo credit: NASA